/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets.friends;

import database.Database;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Stephen'sSSD
 */
@WebServlet(name = "AddFriendsToTripServlet", urlPatterns = {"/AddFriendsToTripServlet"})
public class AddFriendsToTripServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        String[] friends = request.getParameterValues("friends");
        int tripId = Integer.parseInt(request.getParameter("tripId"));
        Connection c = Database.getConnection();
        try {
            if (c != null) {
                try {
                    int x = 0;
                    while (x < friends.length) {
                        PreparedStatement s = c.prepareStatement("INSERT INTO friendsontrip(friendId,tripId) VALUES(?,?)");
                        s.setInt(1, Integer.parseInt(friends[x++]));
                        s.setInt(2, tripId);
                        try {
                            s.executeUpdate();
                        } catch (SQLException e) { /* DO NOTHING */ }
                    }
                } catch (SQLException ex) {
                    out.println("Error, please reload the page");
                }
                ///////////// THIS IS THE GetFriendsOnTripServlet ANY CODE THAT WAS CHANGED THERE MUST BE CHANGED HERE ///////////////////////
                 try {
                    PreparedStatement s = c.prepareStatement("SELECT * FROM friendsontrip WHERE tripId = ?");
                    s.setInt(1, tripId);
                    ResultSet rs = s.executeQuery();
                    if (rs.next()) {//Only put if there is a resultSet
                        out.println("<span class='friendsOnTripBanner'>Friends On Trip: </span>");
                        rs.previous(); //return
                    }
                    else{
                        out.println("Add friends to trip!");
                    }
                    while (rs.next()) {
                        PreparedStatement ss = c.prepareStatement("SELECT * FROM user WHERE id = ?");
                        ss.setInt(1, rs.getInt("friendId"));
                        ResultSet rss = ss.executeQuery();

                        while (rss.next()) {
                            out.println("<span class='friendOnTrip'>" + rss.getString("name") + "</span>");

                        }
                        if (!rs.isLast()) {
                            out.println(",&nbsp;");
                        }
                    }
                } catch (SQLException ex) {
                    //Logger.getLogger(GetFriendsOnTripServlet.class.getName()).log(Level.SEVERE, null, ex);
                }
                 //////////////// END GetFriendsOnTripServlet //////////////////////
            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
